module ConferenceTracker
  class Duration
    SECS_IN_MIN = 60
    UNITS = {
      "lightning" => 5
    }

    def initialize(value)
      @value = UNITS.fetch(value, value).to_i
    end

    def to_i
      @value * SECS_IN_MIN
    end

    def to_s
      UNITS.invert.fetch(@value, "#{@value}min")
    end
  end
end